Improvement in chain-pumps



UNITED STATES PATENT OFFICE.

L. A. FISHER, OF CHICAGO, ILLINOIS.

IMPROVEMENT lN CHAIN-PUMPS.

Specification forming part ol' Letters Patent No. Ll 5,484, datedDecember :20, 1R64.

To all whom 'it muy concern Beit known that I, L. A. FISHER, of Chicago,Cook county, in the State ot Illinois, have invented an lmprovedChain-Pump, and l do hereby declare that the following, taken inconnection with the drawing which accoinpany and form part of' thisspeciiication, is a description ot' my invention sufficient to enablethose skilled in the art to practice it.

This invention relates to the construction of chainvpumps; and itconsists in a peculiar method ot' or mechanism for actuating the valvesor buckets as they enter the water in the well or cistern to which thepump is applied, so that until each bucket enters the spout or tubethrough which the water is elevated it has the position best adapted forallowing it to pass through the water without obstruction to itsmovement.

The drawing shows my invention as embodied upon a floating pump designedfor pumping water in large volume from ponds, ditches, tbc., though theimprovement is ot' course not confined to such application.

The general construction and operation of l the pump will be readilyunderstood from the drawing and need not be jnuticularly described.

Shafts a b each carry a pair ot' sprocketl Wheels, c and d, and aroundthe upper and l lower one on each side an endless chain, c, works, thebucketsfbeing mounted upon and g carried by these chains. Each bucket,instead of being made immovable with respect to the j chains to stand ina position at right angles to the links from which the bucket projectsas it passes from wheel to wheel, is so hung as i to have its positionchanged asit passes around the wheels--this heilig effected as follows:

Each bueketis hung by brackets g (extending from, at, or near itsopposite ends) to the tops of brackets or projections la on the chainsc. From the links next beyond the links of the chain in advance of thosefrom which thel brackets L project are other and similar brackets orprojections, From the tops of these brackets links or connecting-rods kextend to the top of the bucket in rear of the same, as seen in thedrawing. As the links ot'Y the chains are brought around upon theperimeter of the sprocketwheels the distance between the outer ends ofthe brackets hiis increased. When the brackets i begin to turn upon thewheels, their movement causes the connect ing-rods la to turn the bucketto which they are jointed into the position seen in the drawing, bywhich they enter the water edgewise and present no obstruction to themovement of the chains and buckets until it comes into the tube l, orinto the position therein in which it will lift a volume of water,filling the space between this and the next bucketin advance. rEhebucket is brought into this last position by the straightening of thelinks as they leave the sprocket-wheel, which carries back the bracketsIt z' to their nearest relative position, and causes the bucket to standat right angles tothe general line of the links of the chains.

I claim- The combination ot' the movable buckets with the mechanism forchanging the position of the same, substantially as set forth.

L. A. FISHER.

Witnesses L. M. LULL, WILLIAM CASE.

